x = int(input())
for i in range(8):
    if 400+200*i <= x <= 400+200*i+199:
        print(8-i)
        break x = int(input()) x int(input()) int input() input for i in range(8):
    if 400+200*i <= x <= 400+200*i+199:
        print(8-i)
        break i range(8) range 8 if 400+200*i <= x <= 400+200*i+199:
        print(8-i)
        break 400+200*i <= x <= 400+200*i+199 400+200*i <= x 400+200*i 400 200*i 200 i x 400+200*i+199 400+200*i 400 200*i 200 i 199 print(8-i) print 8-i 8 i break x = int(input()) int(input()) x
x = int(input())
for i in range(8):
    if 400+200*i <= x <= 400+200*i+199:
        print(8-i)
        break